Charles de b



(No Model.)

C. DEB. SHEPARD.

I GENTRIPUGAL LIQUID SEPARATOR, N0. 375,012.

Patented DeoQZO, 1887.

llllllllllllh witmeooap 3 N, PETERS. Pholouihographer, Wilmington, D O Y UNITED STATES PATENT OFFICE.

CHARLES DE 13. SHEPARD, OF NEW YORK, N. Y.

CENTRI FUGAL LlQUlD-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 375,012, dated December 20, 1887.

Application filed April 29, 1887.

To all whom it may concern.-

Be it known that I, CHARLES DE B. SHEP- ARD, a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Centrifugal Liquid-Separators, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has relation to a dischargeconductor for centrifugal liquid-separators.

The object of the invention is to provide a conductor which can be cheaply manufactured and rendered capable of long service by a re newal of that portion thereof that is subjected to the greatest wear, and which can be readily adjusted, for purposes hereinafter specified, and which can furthermore be employed as a conductor for delivering a liquid from a centrifugal machine to a point above said machine, all as hereinafter described.

Other objects and advantages of the invention will hereinafter appear, and the novel features thereof will be particularly pointed out in the claims.

Referring to the drawings, Figure 1 is aside elevation of my conductor as applied to acen' trifugal machine, the bowl of which is partially shown in a substantially central vertical section. Fig. 2 is a central longitudinal vertical section of my conductor. Figs. 3 and 4 are views of modifications, and Fig. 5 is a perspective of my removable tip for aconductor.

Like letters of reference indicate like parts in all the figures of the drawings.

A represents the bowl of a centrifugal machine, and in this instance it is provided with a depending neck, A, having a cream-discharge port, A and an upper annular chamber, A through the bottom of which there extends a pipe, A, directly to and in contact with the inner wall of the bowl, to which it is secured by solder, brazing, or any other suitable manner, as shown at 'A'. It is understood, also, that the upper end of the pipe A is rigidly secured in the bottom of the annular chamber A. By this construction the heavier constituent of the liquid being separated is conducted by the pipe A upwardly into the annular chamber A", and the bowl itself is Serial No. 236,584.

strengthened against expansion by the centrifugal force generated during the operation of the bowl.

By the described connection of the pipe A a much stronger construction is secured than any which involves the passage of the pipe through the side wall of the annular chamber.

It is understood that a suitable creanrrecep tacle will be provided beneath the bowl for the reception of that constituent of milk when the same is being subdivided into its constituent elements.

Although I have mentioned the application of my invention to the separation of milk from cream, it is understood that the same may be used for any other purpose to which it is adapted and for the separation of any other liquids than milk.

B represents any suitable fixed part of the frame-work of a centrifugal machine, and it projects over the bowl and terminates centrally therewith in a sleeve, B, which is secured in any suitable manner to the bracket B. A setscrew, B is threaded in the sleeve for the purpose of retaining my dischargeconductor in a desired position, as hereinafter described.

0 represents my conduct-or, or rather the body portion thereof, and it consists of a tube of any desired configuration in cross-section. At one end of the tube there is removablyinserted a tip, D, which is at one end rectangular in cross-secti0n, thereby providing four sides, I), which in operation serve as cuttingedges. The tip is also provided with an annular rib or flange, D which serves to prevent a liquid from creeping up and along the discharge'conductor. The remaining portion of the tip is in this instance cylindrical and screw-threaded, as at D, so as to be connected with the conductor 0, which is interior] y screw-threaded, as at O.

I do not limit my invention in this regard to a screw-threaded connection of the tip with the conductor; but I may substitute therefor any other form of connection which will suggest itself to persons skilled in the art of constructing conductors generally.

The body portion of the conductor is provided with as many slots or grooves O as (No model.)

there are sides or cuttingedges D on the tip. In this instance four cutting-edges or sides are formed on the tip by giving it a rectangular contour in cross'section; but it is evident that any polygonal contour would present a series of cutting-edges. I therefore in such cases provide as many grooves (J as there are sides to the tip. The grooves may be sunken in the body of the tube, as shown in Fig. 2; or an annular rib, boss, or collar may be formed on the tube, and the grooves (1 may extend longitudinally therethrough, as shown in Fig.4, in which case a ing, B for entering a groove may be formed on the sleeveB, so that the set-screw B may be so arranged as to bear upon the shoulder or tube at points between the grooves. In the construction shown in Figs. 1 and 2 the set-screw projects into the groove 0, and thus acts to prevent, as does the ing 13', Fig. 4, any rotation of the conductor within the sleeve,while at the same time it has freedom of movement longitudinally therein.

As thus far described the longitudinal adjustment ofthe conductor is intended to be produced directly by hand, and for all practical purposes this is sufficient; but in some 'instances an exceedingly fine adjustment of the longitudinal movement of the conductor may be required, and in such instances I form in the sleeve 13, and at one end thereof, an annular groove, B, into which the latch or lug E, secured to a handwheel, E, by a bolt, E takes. The hand-wheel is interiorly screwthreaded, as at E, to fit an exterior thread, 0 formed on the conductor. In this construction the rotation of the hand-wheel will cause the conductor to travel longitudinally in the sleeve, while the set-nut B" or a lug, B in the groove C of the conductor will prevent any rotation of the conductor within the tube. The opposite end of the tube is provided with an elbow, F,which may be rotated, so as to be presented in different directions for the delivery of the liquid through the conductor to different desired points. In thisinstance the rotation of the elbow F is provided for by means of a screw-collar, F, threaded or otherwise secured to the conductor 0, and a cap, F, threaded to the collar, the cap being adapted to permit of the introduction therein of the elbow and its flange F so that the whole may be secured in a liquid-tight manner in connection with the conductor. A hose, F", may be applied to the elbow and serve to conduct the constituents being delivered from the machine to a point above the same.

In the operation of a centrifugal machine the constituent elements are, when delivered by a conductor of this class, thrown with comparatively great force, so that by providing a connection with the discharge-conductor which is capable of being disposed to deliver in all directions I utilize the machine in such a manner as to cause it to take the place and perform the function of a pump. In many cheese-factories the milk is creamed for the pur pose ofthe manufacture of butter, and it is then necessary to pump the skimmed milk to an upper floor of the factory. By my construction, as before stated, I have avoided the necessity, expense, and cost of running a pump.

It is known that when a machine of this character is in operation the body of skimmed milk within the bowl is by centrifugal force rendered exceedingly firm and capable of offering the resistance of a solid body, so that conductors of this class invariably wear away with great rapidity at the point which comes into contact with the liquid. Now, by pro viding a removable tip I avoid the necessity of a provision of an entirely new conductor the tip of which has become worn. Furthermore, by giving my tip a polygonal form and providing a slot or groove in the body'of the conductor relatively arranged with the sides of the tip and permitting only longitudinal movement of the conductor in any adjustment thereof, I am enabled to present a desired cutting-edge or side to the liquid, and to change from one side to another of the tip, still preserving a proper presentation of the side or cutting-edge.

There is a material advantage accompanying a conductor which has only longitudinal movement in its supportingsleeve, in that it can be instantaneously withdrawn from the bowl, while in the use of a SCI6\ -threaded conductor more time is required to change the relative position of the same with regard to the bowl.

Having thus fully described my invention 7 and its'operation, what I claim is- 1. A discharge conductor for centrifugal liquid-separators, consisting of a pipe having a polygonal tip and grooved in line with the several faces of the tip, whereby the same may be adjusted to expose either face of the tip to action, substantially as specified.

2. A discharge-conductor for centrifugal liquid-separators, provided with grooves, in combination with a bracket for supporting the same, provided with a set-screw adapted to fit the grooves, substantially as specified.

3. The separating-bowl having an upper annular chamber and a pipe extending from the inner surface of the bowl, to which it is firmly attached, to the top of the bowl, so as to communicate with said annular chamber, and having a depending neck provided with a port for the lighter constituent, in combination with the discharge-conductor provided with grooves or their described equivalents, and a device for adj ustably securing the conductor 2n the desired position, substantially as speci- 4.. The bowl A, having the annular cham-' ber A and provided with the pipe A, passing through the bottom of the annular chamher to the wall of the bowl and firmly secured at each end to the wall and to the bottom of In testimony whereof I affix my signaturein the chamber, respectively, substantially as presence of two witnesses. specified.

5. The removable tip D, polygonal in cross- CHARLES DE B. SHEPARD. section at one end, each of its sides formed as a cutting-edge, and provided with an annular \Vitnesses: rib and at the other end with a screw threaded B. F. MORSELL, shank, substantially as specified. W. S. DUVALL. 

